Placental causes of premature deliveries and stillbirths.
D005260:Female; D005313:Fetal Death / Q000209:etiology*; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007752:Obstetric Labor, Premature / Q000209:etiology; D010920:Placenta; D011247:Pregnancy